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weqwewe [10]
3 years ago
11

Can somebody please help me with these 2 problems?

Mathematics
1 answer:
andrew11 [14]3 years ago
3 0
Give me 10 minutes and i’ll message you with the answer and respond here
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what base could be written in the blank to make the exponential function model 15% decay ? y= (__1/2__) ^t\12
Helga [31]

Answer:

0.85

Step-by-step explanation:

1 - 15% = 1 - 0.15 = 0.85

y = (0.85)^\frac{t}{12}

Answer: 0.85

5 0
1 year ago
Dimensional Analysis
AlladinOne [14]

A kilogram of silver contains 5.58×10²⁴ atoms.

<h3>How to determine the parameter</h3>

From the question given above, the following data were obtained:

  • 1 mole of silver = 107.9 g
  • Number of atoms in 1 mole of silver = 6.02×10²³ atoms.
  • Number of atoms in a kilogram of silver is unknown

Now, we shall convert 1 kg of silver to grams (g).

This can be obtained as follow:

1 kg = 1000g

Therefore, 1 kg of silver is equivalent to 1000g.

Now, let's determine the number of atoms in 1 kg (i.e 1000 g) of silver as follow:

If 107.9 g of silver contains 6.02×10²³ atoms.

Then, 1000 g of silver will contain:

= (1000 × 6.02×10²³) / 107.9

= 5.58×10²⁴ atoms.

Thus, a kilogram of silver contains 5.58×10²⁴ atoms.

Learn more about atoms here:

brainly.com/question/6258301

#SPJ1

8 0
2 years ago
Find the value of this expression if x = -1 and<br> y=7.<br> Xy / 8
ioda

-7/8

Step-by-step explanation:

\frac{xy}{8}  \\  =  \frac{( - 1) \times 7}{8}  \\  =  -  \frac{7}{8}

So, the value of xy/8 is -7/8

7 0
3 years ago
Students are painting a mural. So far the mural is painted 1/4 blue 2/8 red and 3/12 green. Use fraction strips to determine how
nirvana33 [79]
If you make the denominators all the same, the fractions are 3/12 , 3/12 , and 3/12. Then by simply adding them together you get that the mural is 9/12 painted. that then simplifies to  3/4 or 75%

Hope this helps :)

6 0
3 years ago
Which One Doesn't Belong (WODB)
mina [271]

ANSWER:

[i] 4 × 10.56 = 42.2

[ii] 5 × 0.432 = 2.16 (not 2.18)

So, <u>Correct choice</u> - [B]

5 0
3 years ago
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